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1.更新I2C框架。

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MacRsh
2023-06-10 13:21:12 +08:00
parent 06a67fc20f
commit 61beef906b
1 changed files with 66 additions and 19 deletions
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85
device/i2c/i2c.c
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@@ -12,6 +12,9 @@
#if (MR_CONF_I2C == MR_CONF_ENABLE)
#define _MR_I2C_WRITE 0
#define _MR_I2C_READ 1
static mr_err_t mr_take_i2c_bus(mr_i2c_device_t i2c_device)
{
mr_err_t ret = MR_ERR_OK;
@@ -45,14 +48,61 @@ static mr_err_t mr_take_i2c_bus(mr_i2c_device_t i2c_device)
i2c_device->bus->owner = i2c_device;
}
/* Send the i2c-bus start signal and read cmd */
i2c_device->bus->ops->start(i2c_device->bus);
return MR_ERR_OK;
}
static mr_err_t mr_release_i2c_bus(mr_i2c_device_t i2c_device)
{
mr_err_t ret = MR_ERR_OK;
MR_ASSERT(i2c_device->bus != MR_NULL);
return mr_mutex_release(&i2c_device->bus->lock, &i2c_device->device.object);
/* Release the mutex lock of the i2c-bus */
ret = mr_mutex_release(&i2c_device->bus->lock, &i2c_device->device.object);
if (ret != MR_ERR_OK)
{
return ret;
}
/* Send the i2c-bus stop signal */
i2c_device->bus->ops->stop(i2c_device->bus);
return MR_ERR_OK;
}
static void mr_i2c_bus_send_address(mr_i2c_device_t i2c_device, mr_uint8_t read_or_write)
{
MR_ASSERT(i2c_device->bus != MR_NULL);
if (read_or_write)
{
/* Send the read address signal */
if (i2c_device->config.address_mode == MR_I2C_ADDRESS_MODE_10)
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(0xf1 | ((i2c_device->address) >> 8) << 1));
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 2));
}
else
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 1 | 0x01));
}
}
else
{
/* Send the write address signal */
if (i2c_device->config.address_mode == MR_I2C_ADDRESS_MODE_10)
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(0xf0 | ((i2c_device->address) >> 8) << 1));
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 2));
}
else
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 1));
}
}
}
static mr_err_t mr_i2c_bus_open(mr_device_t device)
@@ -124,6 +174,7 @@ static mr_err_t mr_i2c_device_ioctl(mr_device_t device, int cmd, void *args)
case MR_CTRL_ATTACH:
{
/* Detach the i2c-bus */
if (args == MR_NULL)
{
i2c_device->bus = MR_NULL;
@@ -167,18 +218,17 @@ static mr_ssize_t mr_i2c_device_read(mr_device_t device, mr_off_t pos, void *buf
return ret;
}
/* Send the i2c start signal and read cmd */
i2c_device->bus->ops->start(i2c_device->bus);
if (i2c_device->config.address_mode == MR_I2C_ADDRESS_MODE_10)
/* Send offset */
if (pos > 0)
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(0xF1 | ((i2c_device->address) >> 8) << 1));
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 2));
}
else
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 1 | 0x01));
mr_i2c_bus_send_address(i2c_device, _MR_I2C_WRITE);
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)pos);
i2c_device->bus->ops->start(i2c_device->bus);
}
/* Send the i2c-bus read command */
mr_i2c_bus_send_address(i2c_device, _MR_I2C_READ);
for (recv_size = 0; recv_size < size; recv_size++)
{
*recv_buffer = i2c_device->bus->ops->read(i2c_device->bus, (mr_state_t)(recv_size == 0));
@@ -206,16 +256,13 @@ static mr_ssize_t mr_i2c_device_write(mr_device_t device, mr_off_t pos, const vo
return ret;
}
/* Send the i2c start signal and write cmd */
i2c_device->bus->ops->start(i2c_device->bus);
if (i2c_device->config.address_mode == MR_I2C_ADDRESS_MODE_10)
/* Send the i2c-bus write command */
mr_i2c_bus_send_address(i2c_device, _MR_I2C_WRITE);
/* Send offset */
if (pos > 0)
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(0xF0 | ((i2c_device->address) >> 8) << 1));
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 2));
}
else
{
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)(i2c_device->address << 1));
i2c_device->bus->ops->write(i2c_device->bus, (mr_uint8_t)pos);
}
for (send_size = 0; send_size < size; send_size++)